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众多波形控制方法和波形控制参数的研究与确定迫切需要一种简便 ,有效的方法。为此 ,本文提出对此动态过程进行建模 ,通过计算机仿真研究此过程的思路。论文首先分析CO2 气体保护焊熔滴短路过渡动态过程。在此基础上 ,建立了过程的数学模型。模型包括 :电弧弧长变化模型、电弧非线性负载模型和弧焊电源—电弧系统模型。然后将这些数学模型转化成计算机仿真软件MATLAB环境下的Simulink仿真模型 ,并进行了仿真研究。仿真结果与试验结果的对比表明 ,所提出的模型建立方法是合理的 ,建立的模型是实用的 ;应用MATLAB可对熔滴短路过渡动态过程进行仿真分析。
Many waveform control methods and waveform control parameters of the research and determination of an urgent need for a simple and effective method. To this end, this paper proposes to model this dynamic process and to study the process of this process through computer simulation. The paper first analyzes the dynamic process of CO2 gas shielded arc welding droplet short circuit transition. On this basis, the mathematical model of the process is established. The model includes: arc arc length variation model, arc nonlinear load model and arc welding power source - arc system model. Then these mathematical models are transformed into Simulink simulation model under MATLAB environment of computer simulation software, and the simulation research is carried out. The comparison between the simulation results and the experimental results shows that the proposed method is reasonable and the model is practical. The simulation of the dynamic process of the droplet short circuit transition can be carried out by using MATLAB.